Forms Data Controls :: Dropdownlist1 Doesn't Get Selecteditem "value"?
Jan 18, 2011
I am using the following code :
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Response.Redirect("memberlogin.aspx?d=" + DropDownList1.SelectedValue.ToString)
End Sub
but DropDownList1.SelectedValue.ToString expression returns the TEXT of the selectedItem.
Here is the dropdownlist aspx side :
<asp:ListItem meta:resourcekey="ListItemResource1" Text="Turkçe" Value="tr"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource2" Text="English" Value="en"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource3" Text="Russki" Value="ru"></asp:ListItem>
<asp:ListItem meta:resourcekey="ListItemResource4" Text="Français" Value="fr"></asp:ListItem>
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Jan 14, 2010
I am problem with gridview pager template,i have a dropdownlist in my pagercontrol butdl.selectedindexchange is not getting fired up if i am trying to bind gridview at code behind.But if iam using sqldatasource instead its working fine.
[Code]....
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Jan 24, 2011
We use gridview for showing a data from table.It show fine in certain case like in table field dispostion is data and test but in table we put the string Ineligible Member/Member No Longer Enrolled - Spoke to Target and Wrong Number After Skip Tracing then it gives error. 'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.
The following is snippest my code ,tell me where i am wrong.
[Code]....
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Dec 29, 2010
I've got a gridview which displays records from a table in SQL Server. Next I've got a details view which displays the details from the selected record. This works fine.
When the user selects a record, which then gets displayed in the details view, I'd like to make it possible for the user to edit the record. I've done searchs for this online, and found lots of responses, but none quite displaying an answer to the question I've got. I'm sure it is a simple thing I've done wrong, but at this point I don't know what it is I've done wrong. I've getting this error,"'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value".
I've got a SqlDataSource to display the data in the details view. And then I specified another SqlDataSource to use for the dropdownlist control in the details view. I converted the field, in the details view, to a template field and have been replacing it. Here's the SqlDataSource controls definitions:
[Code]....
and here's the info for the details view:
[Code]....
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Jul 23, 2010
i have a detailstview and sql datasource I am retrieveing the data so far no problems but afteradding a dropdownlist in edit mode and clicking edit button I get this error"
'DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value.[Code]....
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Apr 11, 2010
I give up. After many hours of scouring the internet, cannot find a simple example of binding a simple object to a ListView and figure out which one is selected in the SelectedIndexChanged event.
Many people talk about the SelectedItem and SelectedItems properties; which somehow, according to intellesense, do not even exist on my ListView. I must have a "special .Net build" :)
If I have a collection of "Books" bound to a ListView. How do I get the "selected book" in the SelectedIndexChanged event? (Multiselect = false)
I would think it's something like:
Book MyBook = (Book)ListView1.SelectedItem
I'd even settle for
Book MyBook = (Book)ListView1.SelectedItems[0]
No such luck. My very special ListView does not seem to have either property.
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Apr 13, 2010
I've been pulling my hair out over this one... I've searched on the net and even in the forums, but can't seem to come up with an answer for a simple question.I tried the following code inside my html to get the selected value that comes from our database into the grid and it doesn't work. I am positive that a value exists for the itemType. It is 1. Instead of Checked, I tried SelectedItem and SelectedIndex. Neither of those worked.
<code>
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I erased the above code from my grid and inside the ItemDataBound event, I placed the following code, but don't know what other code I should place next after it. I know the value inside "itemType" is 1 by debugging it.
<code>
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</code>
How can I simply find the selecteditem in the list coming back from the database inside the itemdatabound event?
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Jan 18, 2011
I am using the following code :
Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
Response.Redirect("memberlogin.aspx?d=" + DropDownList1.SelectedValue.ToString)
[code]...
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Nov 20, 2010
Change selecteditem of ddl on click button
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Sep 13, 2010
Why I am unable to setfocus to my list box if the index > 820
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Aug 11, 2010
i have create 2 drop down list..and i set value for first DropDownList1..it's working good..
now i trying to add a method to collect all (list) data from DropDownList1 and split into words and display into DropDownList2..
when i add method to Default.aspx.cs page it nt working...
here's my code(no errors):
Default.aspx
<body>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server"
[Code]....
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Jul 19, 2010
I get the message "The name DropDownList1 does not exist in the current context". Without using a master page, I can get it to work. It's when I bring this code over to a master page is when I get this error. I'm trying to auto populated a drop down list. Here is my code...
protected void Page_Load(object sender, EventArgs e)
{
if (this.IsPostBack == false)
{ [code]....
This isnt a project, I made a New Website. I can't figure out why this will work outside of my master page and not in .
Oh and im not putting this code inside the SMC.master.cs file, It goes inside my Tool.aspx.cs file
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Mar 29, 2011
I have a dropdownlist in a Usercontrol defined in a table as:
<asp:DropDownList
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First post here, I usually try not posting until I am completely lost. I have a webform that gets a dynamic dropdownlist added to a placeholder in a method during pageload. During a submit of the page, I want to be able to get the selectedItem in the DropDownList that was also added dynamically from a DB. I know the ID of the DropDownList, and I know the Value of all the ListItems. Although when I am trying to use FindConrol(ID), and assign it to a DropDownList, the Control comes back Null and I get an error saying "Object Reference not set to and Instance of an Object", I believe because its not finding the control.
[Code]....
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Jun 15, 2010
I have several lines of code like this:
[Code]....
How can I do this?
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Apr 12, 2010
Here is my attempt:
[Code]....
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Mar 10, 2011
using vb.net/asp.net 2005
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Oct 28, 2010
So here is the problem , Is it possible to get the "SelectedItem.Text" of a binded dropdownlist? because everytime I'm getting null Even though I'm having
items in the dropdownlist.
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[Code]....
here is my aspx code:
[Code]....
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here is (part of, its 50 items long) the radiobuttonlist
[Code]....
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[Code]....
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[Code]....
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Oct 14, 2010
I was wondering, is there a way to set selecteditem in RadioButtonList using javascript (Client-Side) ? Is there an easy way to do that ?
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Object reference not set to an instance of an object.
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I want populate the dropdownlist1 with Country and dropdownlist2 with City of that Country from web
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<br />
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